Threading Applicable toolholders and inserts TPGB for internal threading American national tapered pipe (NPT) External thread Internal thread Nominal thread TPI Toolholder InsertPartial profileFull profileToolholder InsertPartial profileFull profile ¹⁄16NPT¹⁄8NPT 27 KTTRKTTXR -16 TT32R6000-16FTTX32R6000 - No tools available ¹⁄4NPT3⁄8NPT KTNR -1618KTNSR-16S-KTNL16 - 16ER18NPT EZH Sleeves EZTR060050-60-004EZTR070060-60-004 - ¹⁄4NPT3⁄4NPT KTNR -1614KTNSR-16 - 16ER14NPT EZH Sleeves EZTR070060-60-004 -S-KTNL16 ¹⁄2NPT KTNR -16 SINR1616S-16 14 KTNSR -16 - 16ER14NPT - 16IR14NPT 3⁄4NPT S -KTNL16 SINR2016S-16 1 NPT SINR2420S-16 1¹⁄2NPT KTNR -16 CINR3025S-16 11.5 KTNSR -16 - 16ER11.5NPT - 16IR11.5NPT 1¹⁄2NPT S -KTNL16 CINR3732S-16 2 NPT • Application of NPTF thread J NPTF is the thread for sealing pipes without using any sealing material. Thread symbol is similar to NPT but the tolerance is different from that of NPT, therefore the above inserts are not available for NPTF. 30˚ Trapezoidal (Tr) The JIS Standard Trapezoidal Size to be machined by previous TNN Insert are shown. Nominal thread Pitch(mm) External threadToolholder InsertPartial profileFull profileToolholder Internal threadInsert BorePartial profileFull profiledia. Tr 16X2 No tools available No tools available - - 14.00 Tr 18X2 2 KTNR -16 16.00 Tr 20X2 KTNSR -16 16ER200TR - SINR1616S-16 16IR200TR -S-KTNL16 18.00 Tr 22X3 3 SINR1616S-16 16IR300TR - 19.00 Tr 24X3 21.00 Tr 26X3 3 SINR2016S-16 16IR300TR - 23.00 Tr 28X3 25.00 Tr 30X3 SINR2420S-16 16IR300TR - 27.00 Tr 32X3 29.00 Tr 34X3 3 31.00 Tr 36X3 33.00 Tr 38X3 KTNR -16 CINR3025S-16 16IR300TR - 35.00 Tr 40X3 KTNSR -16 16ER300TR - 37.00 Tr 42X3 S -KTNL16 39.00 Tr 44X3 41.00 Tr 46X3 43.00 Tr 48X3 45.00 Tr 50X3 3 CINR3732S-16 16IR300TR - 47.00 Tr 52X3 49.00 Tr 55X3 52.00 Tr 60X3 57.00 Tr 65X3 62.00 Tr 70X4 66.00 Tr 75X4 71.00 Tr 80X4 76.00 Tr 90X4 86.00 4 KTNR -22 22ER400TR - CINR3732S-22 22IR400TR - Tr 95X4 91.00 Tr 100X4 96.00 Tr 105X4 101.00 Tr 110X4 106.00 • TM thread: TM thread (old JIS 30˚ trapezoidal thread) has been discontinued. But if the "Nominal dia. X pitch" is the same, the above Tr thread can be used. • TW thread: TW thread is 29˚ trapezoidal thread, therefore the above inserts are not available. J49